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A new integration method with minimized extra coupling effects using inductor and capacitor series-parallel compensation for wireless EV charger

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  • Deng, Junjun
  • Pang, Bo
  • Shi, Wenli
  • Wang, Zhenpo

Abstract

Wireless electric vehicle charger has become increasingly popular because of its improved convenience and safety. The recently proposed inductor-capacitor-capacitor (LCC) compensated topology and bipolar magnetic coupler structure have promoted the comprehensive performance of the wireless power transfer (WPT) system. Furthermore, the idea of integrating the magnetic components in the LCC compensated WPT system has been proposed for reducing the bulk. However, the extra inter-couplings between the adjacent coils are also introduced, which complicates the parameters design and the characteristic analysis. In this paper, a new integration method is presented for wireless EV charger adopting LCC compensation networks along with bipolar coupler. The impact of the extra couplings is evaluated thoroughly through the circuit analysis and simulation. The finite element analysis (FEA) tool is utilized to evaluate the extra coupling effects of the compensated coils, which leads to the proposed integration coupler structure. The comparison of the unipolar and the bipolar as the compensated coils for the extra coupling minimizing is discussed considering the misalignment. At last, a prototype of the magnetic coupler with a size of 550mm×500mmhas been built and tested. A peak efficiency of 95% is achieved while transferring 6.6kW electric power from a DC power source to the load in the condition of 150mm vertical clearance.

Suggested Citation

  • Deng, Junjun & Pang, Bo & Shi, Wenli & Wang, Zhenpo, 2017. "A new integration method with minimized extra coupling effects using inductor and capacitor series-parallel compensation for wireless EV charger," Applied Energy, Elsevier, vol. 207(C), pages 405-416.
    • Handle: RePEc:eee:appene:v:207:y:2017:i:c:p:405-416
    DOI: 10.1016/j.apenergy.2017.05.088
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    References listed on IDEAS

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    Citations

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    Cited by:

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    2. Li, Lantian & Wang, Zhenpo & Gao, Feng & Wang, Shuo & Deng, Junjun, 2020. "A family of compensation topologies for capacitive power transfer converters for wireless electric vehicle charger," Applied Energy, Elsevier, vol. 260(C).
    3. Cheng, Bing & He, Liangzong & Li, Le & Liu, Houxuan & Lu, Fengwang, 2023. "Improved wireless power transfer system utilizing a rectifier with nonlinear resistance compression characteristic," Applied Energy, Elsevier, vol. 331(C).
    4. Frechter, Yotam & Kuperman, Alon, 2020. "Analysis and design of inductive wireless power transfer link for feedback-less power delivery to enclosed compartment," Applied Energy, Elsevier, vol. 278(C).
    5. Colmenar-Santos, Antonio & Muñoz-Gómez, Antonio-Miguel & Rosales-Asensio, Enrique & López-Rey, África, 2019. "Electric vehicle charging strategy to support renewable energy sources in Europe 2050 low-carbon scenario," Energy, Elsevier, vol. 183(C), pages 61-74.
    6. Mohamed, Ahmed A.S. & Wood, Eric & Meintz, Andrew, 2021. "In-route inductive versus stationary conductive charging for shared automated electric vehicles: A university shuttle service," Applied Energy, Elsevier, vol. 282(PA).
    7. Machura, Philip & Li, Quan, 2019. "A critical review on wireless charging for electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 104(C), pages 209-234.
    8. Li, Feng & Li, Yanjie & Zhou, Siqi & Chen, Yifang & Sun, Xuan & Deng, Yutong, 2022. "Wireless power transfer tuning model of electric vehicles with pavement materials as transmission media for energy conservation," Applied Energy, Elsevier, vol. 323(C).

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